1-Consider a sample of nitrogen gas at volume 2904 mL at an unknown temperature. When the sample is submerged in ice water (T = 0C), its volume changes to 1.8 L. What was the initial temperature of the nitrogen (in C)?

Assume pressure stays constant

2- A weather balloon is inflated with helium (He) gas to a volume of 1.98 L at an ambient temperature of 23.2 C and pressure of 1.08 atm.

Once the balloon has reached a higher altitude, its volume has changed to 2.33 L and the temperature is now 15.7 C.

What is the final pressure (in torr)?